maybeWhen<TResult extends Object?> method

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult $default(String? currencyFormat, String? currencyFormatSymbolISOCurrency, String? currencyCode, String? currencySymbol, String? currencyValue,)?, { required TResult orElse(), })

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs
TResult maybeWhen<TResult extends Object?>(
  TResult Function(
          String? currencyFormat,
          String? currencyFormatSymbolISOCurrency,
          String? currencyCode,
          String? currencySymbol,
          String? currencyValue)?
      $default, {
  required TResult orElse(),
}) {
  final _that = this;
  switch (_that) {
    case _Amount() when $default != null:
      return $default(
          _that.currencyFormat,
          _that.currencyFormatSymbolISOCurrency,
          _that.currencyCode,
          _that.currencySymbol,
          _that.currencyValue);
    case _:
      return orElse();
  }
}